[Closed] Nl2 Co Kk

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.01/$0.02 No-Limit Hold'em (8 handed)

Known players:
[tg]MP3$1.53:///////;CO (Hero)$2.02:///////;BU$3.02:///////;SB$1.14:///////;BB$1.36:///////;UTG2$1.32:///////;MP1$5.90:///////;MP2$1.94:///////;[/tg]

Preflop: Hero is CO with K:h, K:d.
UTG2 calls $0.02, MP1 folds, MP2 calls $0.02, MP3 folds, Hero raises to $0.12, BU folds, SB calls $0.11, BB folds, UTG2 calls $0.10, MP2 folds.

Flop: ($0.4) J:d, 6:h, 8:d (3 players)
SB checks, UTG2 bets $0.10, Hero raises to $0.40, SB folds, UTG2 calls $0.30.

Turn: ($1.2) K:c (2 players)
UTG2 checks, Hero bets $0.80, UTG2 calls $0.80.

River: ($2.8) T:c (2 players)

Final Pot: $2.8.

Results follow:

UTG2 shows a pair of nines(9d 9h).
Hero shows three of a kind, kings(Kh Kd).

Hero wins with three of a kind, kings(Kh Kd).

Was the play alright?
Also, was the 4x raise on flop okay?

Thanks